The most common causes of coughing in winter are generally as follows: 1. coughing after infection: using some anti-allergy drugs, such as ketotifen fumarate tablets, chlorpheniramine maleate, cetirizine, loratadine, etc. 2. cough variant asthma: using oral spray hormones, such as budesonide spray, or oral spray hormones plus medium- and long-acting beta agonists, such as salmeterol, fluticasone, budesonide, Patients may also use leukotriene receptor antagonists, such as montelukast, etc. Of course, some patients also combine anti-allergy medications, such as ketotifen fumarate tablets, etc. 3. Gastroesophageal reflux cough: Acid-suppressing medications, such as famotidine, rabeprazole, etc., may be used. 4. Variable cough: In general, anti-allergy medications, or oral sprays, oral hormones, etc., are commonly used. 5. Hormones, etc. 5. Eosinophilic bronchitis: Patients may use oral spray hormones or, if the symptoms are severe, oral hormones, which can be transitioned to oral spray hormones as the symptoms gradually ease.